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H. HAYDEN, Jr. & W. F. Z. DESANT. ELECTRICAL RAILWAY SIGNAL.

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H. HAYDEN, Jr. 85 W. P. Z. DESANT.

ELECTRICAL RAILWAY SIGNAL.

Patented Feb. 26, 1889.

(No Model.)

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UNTTEn STATES PATENT OFFICE.

HORACE HAYDEN, JR, AND vW ILLIAM F. Z. DESANT, OF NEW YORK, N. Y., ASSIGNORS OF ONE-THIRD TO ALBERT R. GOODING, OF SAME PLACE.

ELECTFHGAL RAILWAY-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 398,613, dated February 26, 1889.

Serial No. 263,348. (No model.)

To all 1071. out it may concern: l

Be it known thatwc, HORACE HAYDEN, -r., 1 and XVILLIAM F. Z. DESAN'J, citizens of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Electrical Railroad-Signal, of which the following is a specification.

Our invention relates to improvements in block-signals and other railway-sign al s, and its obj ectis to provide an automatic signal located in the cab of the engineer. and so arranged as to automatically indicate danger, in the I event that a train preceding has not passed on? the section in advance. We accomplish these objects by the mechanism described in the accompanying specification and illustrated in the drawings, but particularly pointed out in the claims which follow this specification.

Prior to our invention it was old in the art to so arrange a system of electrical block-signals that the presence of a train on a preceding section of track was indicated to the engineer on a succeeding train by the ringing of an electrical bell in the cab; but in the system of signals referred. to the generator was carried in the cab of the locomotive, while in our construction the batteries or generators are permanently located at the respective ends of the sections of track, as will be disclosed.

Referring to the drawings, Figure 1 is a plan view showing a block-signaling system i with two locomotives on succeeding sections 9 of track and main and local batteries at the end of each block. Fig. 2 is a side elevation of a modified form of our block system applied to a single line of rails. Fig. 2 is a detail view of the whistle and detent-releasing apparatus designed to give the alarm or signal. Fig. 3 is aplan view showing the circuits applicable to a switch or draw-bridge. Fig. 4 is a plan. view showing the circuits at the way-station, with means for announcing to the engineer on a train that he should stop and additional means for announcing the approach of the train. Fig. 5 is a detail view of one of the switching-magnets which operate the block-circuits.

R R R are the rails, divided into main sections, 1, 2, and 3, as shown in Figs. 1 and 2.

L and L are two locomotives running on successive block sections. At the end of each block there is a short section of rail, F F F, (shown in Fig. 2,) electricallyinsulated at each end from the adjoining rails. In Fig. 1 there are two such short sections of rails between each block-section to meet the requirements of the modified form therein shown. Each of the switch-magnets M M M is provided with an armaturelever, A A A having an armature on each end and pivoted, as shown, so that it may be tilted in either direction. On the end of these arn'lature-levers are insulating blocks I 1 1 B B B are the batteries for operating the switch-magnets )1 M M as will be described.

to w are the block-signal circuits, and u" it" are the alarm circuits. (Seen in Figs. 1 and s s s are metallic springs adapted to bear 011 either the metallic or insulated faces of the armature-levers A, A, or A 10 is a local circuit running from the axle of the rear locomotive drive-wheel to the magnet )1 in the cab, and thence to the axle of the cab-truck, the function of which circuit is to energize the magnet 31 R B, Fig. 3, are switch-rails having the usual switch-lever, s '10, which is provided with a contact-arm adapted to close the circuit ot the battery B including the circuit wires to w.

H, Fig. i, is a hand-switch located in a way station and adapted to close the circuit of the battery and the wires to 2.0 at the proper time, as will be described.

D is an alarm-bell operated by the battery B in a local circuit including the armaturelever A of magnet MJ when the train approaches the station.

\Ve will now describe the operation of the modified form in Fig. 1. Suppose the engines L L to be in the middle of the sections and 3, as shown. Vhen the engine L reaches the pointa,tl1erc will be no alarm in the cab, for the reason that the battery B will be shortcircuited through the axles of the locomotive drive-wheel and tender-truck wires 10, spring S, and armature-lever A. This will indicate to the engineer that the section in advance isclear. If in the meantime engine L reaches the point A the circuit of battery B will be closed as follows: From the copper pole through the aXle of the locomotive drivewheel, wire 10 magnet M wire w and tend ertruck wheel and axle back to the negative turn, through the agency of the link and valve V, permits the whistle W to be blown. lVhen the engine L advances to the point a, the main circuit of battery B at station I is closed as follows: through the wheel of the locomotive between the wires 10 w, the lower half of magnet M, and to the succeeding section, 2, through the upper half of magnet M. This causes the armature-levers A and A to be tilted to the right and left, respectively, thereby placing the circuits in such conditions as to indicate to the engineer of locomotive L that locomotive L has passed out of block 2, and at the same time leaving the local circuit of battery B at station 1 in condition to sound an alarm on the locomotive L when it reaches that point, if locomotive L has not passed out of section 1 in the meantime. \Vhcn locomotive I. passes point (F, the armature-levers A and A are tilted to the left and right, respect ively, setting A at safety and A at danger.

It is the function of the batteries 13 B, Fig. 1, to operate the alarm in the cab exclusively, and that of the batteries B to operate the signal-switch magnets. Of course it is to be understood that the locon'iot-ive and tender are insulated from each other, and that the only electrical connection between the truckwheels and the rear drive-wheels is through the conductor H73 w.

In Fig. 2 we have shown the system of blocking-signals operated from a single line of rails. In this figure the engine on section 1 has passed out of that section, so that the armature-lever A of magnet M is at safety, while armatures A and A are in the reverse positions, the engines L and L not having yet passed. out of their respective sections 2 and 3.

\Vhen engine L passes over the space a, no circuit will be made from local battery B through the magnet M on the cab, and hence no alarm will be sounded, showing safety on section 1. As the armature A is in reverse position, it will be seen that the local circuit from battery B will be closed through this armature-lever by spring 3 and wire w,

locomotive-wheel, wire 10 magnet M wire w, tender-wheel, and wire in, thus sounding an alarm, as shown. Similarly the next succeeding engine (not shown) would receive an alarm on entering section 3. As engine L passes out of sect-ion 2 into section 1, it closes the circuit of battery B through drive-wheel, I

wires w it, lower half of magnet M, and upper half of magnet M, thus reversing the switches or armature-levers A and A and placing them to indicate safety to an incoming train to section 2 and danger for section 1. Similarly enginel. will set switcharmature A to safety and A to danger as it passes out of section 3 and into section 2.

The operation of the switch and draw-bridge circuits, Fig. 3, will be understood in view of what has already been said concerning the blocking-circuits, it being understood that the alarm-circuit is closed through the cab, as before, at the point a. \Vhen it is desired to stop the train at a way-station, the stationmaster closes the circuit of the hand-switch H, Fig. i, and the alarm is sounded in the cab, as before, the approach of the train having first been announced by the action of the lower half of the magnet M on the armaturelcver A, causing it to tilt to the right and close the local circuit of battery B thereby ringing bell D. As the train arrives at the station, the circuit of battery B is closed through the upper half of magnet M" at the point a, thereby causing the armature-lever A to tilt into the position shown, so that the bell stops ringing.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is-

1. In a system of block-signals for railways, the combination of a main battery located atone end of ablock-section in a circuit including one coil of a switching-magnet at the home station and one coil of an additional switching-magnet at a distant station, with a local battery, also located at the home station, having circuit-connections, as described, with the armature-lever of the switchingmagnet, and a local circuit extending into the; cab of the engine, including a magnet the armature of which controls an alarm, substantially as described.

2. In a system of block-signalsfor railways, the combination of a series of batteries, one for each block-section, each of which includes in its circuit one coil of a switching-magnet at the home station and an additional coil of a switching magnet at the next station in the rear, with a local battery at each station, and circuitconnections, as described, for closing a circuit through an alarm apparatus in the cab of the engine, substantially as described.

3. In a system of block-signals, the combination of the following elements: a main or switching battery and a magnet at each block having two independent coils, switching-circuits running to the adjoining advance and rear blocks and including the separate coils of said magnets, and a local battery at each block including in its circuit the armature of the switelling-magnet, the insulated ends of two adjoining rails, and an alarm-circuit on the cab.

i. Ina system of block-signals for railways, the combination of the following elements:

one main or switching battery for each block included in a circuit running to one coil of each of two switching-magnets, one of said magnets being near the battery and the other at the next block to the rear, a local battery at each block including in its circuit the 1 armature of the switching-magnet, a circuit running to the insulated ends of two adjoinin g rails, and a signalinganagnet located on the i engine and included in a local circuit, substantially as (lOSCl'lbPd.

lations of an alarm located on the engine, while the second includes in its circuit the armature of the switching-magnet, the adjoining ends oftwo insulated rails of the track, and an alarm nagnetlocated on the en- 3 glue and included in a local circuit, substantially as described.

6. In a system of block-signals for railways, 1 the combination of two circuits for each block 1 connected to a single line of insulated rails, one of said circuits including a battery and one portion of the coils of two switching-magt nets located at each end of the block, while t the other includes asccond bflli'fl'y,1311021111121- stem of block-signals, the eombi- 3 nation of two batteries located at each block, one of which includes circuits and switchingb magnets located at the home and rear ends of the block for manipulating the circuit reture-lcrer of the first-named magnet, the adl joining ends of two insulated rails and an alarin-n'iagnet located on the engine and included in a local circuit, substantially as described.

7. In a system of block-signals [or railways, the combination of the following elements: a single line of rails separated into block-sections by insulation, a single battery for each 1 section including in its circuit the insulated i ends of the rails and one coil of a magnet at the battery end of the block and one coil of an additional magnet at the distant end of the block, a tilting armature-lever for each magnet adapted to tilt to the right or left 1 according to which half of the magnet is e11- ergized, a local circuit including each tilting armature'levcr and a separate battery with circuit-connectious, described, running to I the insulated ends of two adjoining rails, and a circuit on the engine including an I alarm-1n agnet,whereby the engineer is warned l in the event of danger in advance substantially as described.

HORACE HAYDEN, J R. \VM. F. Z. DESANT.

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